Electric-terminal box.



F. KUHN.

ELECTRIC TERMINAL BOX.

APPLICATION FILED MAR.8,1D13.

Ll 1939 Patent-,ed 1390.8, 1914.

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/ 9%@ @fw/- @f FRANK KUHN, 0F DETROIT, MICHIGAN.

ELECTRIC-TERMINAL BOX.

specification of Letters Patent.

IPatented Dec. 8, 1914.

Application filed March 8, 1913. Serial No. 752,875.

To alt whom t may concern:

Be it known that I, FRANK KUHN, a. citizen of the United States of America, residing atDetroit, in the county of Vayne and State of Michigan, have invented certain new and useful Improvements in Electric Terminal Boxes, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to electrical fittings employed for the terminal connections of various electrical instruments, and it is the object of the invention to obtain a construction adapted for alternative use with detachable and fixed electrical connections.

To this end the invention consists in the peculiarconstruction of a fitting adjustable to form a socket for receiving a terminal plug connector, and alternatively to form a closed protecting casing or junction box.

In the drawings: Figure l .is a cross section through the device as used with a detachable connector. Fig. 2 is a perspective View of the device with the detachablecover removed. Fig. 3 is a horizontal section through the fitting, showing the same arranged as a junction box for permanent electrical connections.

A is a housing formed of suitable insulating material and preferably of substantially rectangular form. Within this casing are compartments B and C for the conductors of different potential, which compartments are separated from each other by an intermediate partition yD, and are open at one side for access to the connections.

E is a compartment arranged parallel' and adjacent to the compartments Band C and separated therefrom .by the partition F, said compartment E being open at two sides of the casing which are at right angles to each other. j Y

G and G are'metallic contact members arranged within the compartments B and C and projecting through slotsH into lthe compartment E. These metallic members G and G are eachprovided with clamping plates I for connecting thereto electrical conductors J, which latter are inserted through side slots in the casing, and eX- tend into the compartments B and C.

L is a cover for the case, which has an angle Harige M adapted, in one position, to close the open compartment E, While, when arranged in another position, said flange lies adjacent to the opposite side of the case A, leaving the compartment E open.

With the construction as shown and described in use, the casing A `is mounted in any convenient position upon the instru- .A

ment to which connections are to be made-` as for instance, by attaching it to the base or stand N of said instrument. If the electrical connections are to be permanent, one of the conductors forming the external circuit and one of the cooperating conductors which leads fromy the instrument, are both inserted through one of the apertures K, and are connected to each other by the contact G and clamping plate I, the bared metal being all inclosed within the insulating housing; the other conductor of the external circuit is similarly connected by the other contact and clamping plate to the coperating conductor of the instrument. VThe cover L is then secured to the casing A with its flange M arranged to cover the open side of the compartment E, as shown in Fig. 3 and in dotted lines in Fig. 1. If, on the other hand, a detachable connector is to be used with the instrument, only the terminal conductors C of the instrument itself are led through the slots K into the compartments B and C, While the cover L is secured in reverse position, with the iange M adjacent to the rear wall of the housing A, so as to vleave an opening into the compartment E. This compartment thus forms a socket for receiving a suitable plug conductor P, the contacts Q, of which are detachably engageable with the plates G and G.

What I claim as my invention is:

l. The combination of a rectangular insulator casing recessed on one side to form separated compartments, and an adjacent enlarged compartment, the latter being open at one side of the casing, contact members positioned in said separated compartments, said contact members projecting into said enlarged compartment, and a cover for the corresponding open side of all of said compartments, said cover being reversible` and having a fiange adapted in one position to lie adjacent a closed side of the casing, and in reversed position to close the opening in the side of the enlarged compartment of the casing. A

2. The combination of a rectangular insulator casing having a recess therein open upon two sides of the rectangle, and sepaloo rated recesses open upon one side of the casing", contact members positioned in said seperated recesses and extending into the recess which is open upon two sides, and an angle closure member attachable to said cas ing in reversed positions, said closure member in one position completely closing seid 'first mentioned recess, and in the reversed position leaving one side thereof open.

3. The combination of an insulator cesing having a recess therein open upon two sides, means Within said casing for making permanent connections between terminalconnections leading thereinto, and means adapted to receive a removable plug to make a removable connection between the terminal `anneeee one position lying adjacent to closed side of 20 opemng and in reversed position closing both of the recess sides of the casing, whereby the casing may serve as a closed casing for' the permanent connection and in the reversed position of the closure serving as a socket to receive a connector plug.

ln testimony whereof l aiiix my vsignature in presence of two witnesses.-

FRANK KUHN, Witnesses:

JAMns P. BARRY@ yHENRI iE. BQWMAN. 

